public class SystemUtil {
    public static void main(String[] args) {
        String str1=new String("hello");
        String str2=new String("hello");
        System.out.println( str1==str2);
    }
    public static void main1(String[] args) {
        String test="  asd  sghdsuia ";
      int lenth=  test.length();
        System.out.println(lenth);
       char a= test.charAt(0);
        System.out.println(a);
       Boolean b=test.equalsIgnoreCase("ASD");
        System.out.println(b);
       String c= test.trim();
        System.out.println(c);

            }
}